FIELD: physics.
SUBSTANCE: method of determining the protective limit around the position X1 of a moving body, which is fitted with a satellite signal receiver, where position X1 is calculated from pseudodistances calculated from position and time data extracted from signals transmitted by a satellite constellation, involves a step for calculating a first protective limit VPL1 in the first direction from position X1, as well as the following steps. A boundary MMM+ which corresponds to shift of the calculated position relative the actual position XF of the moving body is calculated, where the said shift occurs in the first direction, and occurs due to signal reflection during transmission. A second protective limit VPL2 on the position calculated in the second direction opposite the first direction from the calculated position is calculated and the boundary of the protective limit is included in it.
EFFECT: increased accuracy of determining protective limit in two opposite directions.
6 cl, 3 dwg
